Attachment for looms



D. BLOMBACH.

ATTACHMENT FOR LQOMS.

APPLICATION FILED MAY 20, 1919.

1,334,074. Patented Mar. 16, 1920.

3 SHEETS-SHEET I.

Q INVENTOI? AT 0mm D. BLOMBACH.

ATTACHMENT FOR LOOMS.

APPLICATION FILED MAY 20, 1919.

3 $HEET$-$HEET 2. 5/ Z? 4 Q I Ag.

ATTORNEY Patented Mar. 16, 1920.

D. BLOMBACH.

ATTACHMENT FOR ,LOOMS.

APPLICATION FILED MAY 20, 1919.

Patented Mar. 16, 1920.

3 SHEETS-SHEET 3- INVENTUR Z,

ATTORNEY DANIEL BL01VIBACH,'OF Kenna, NEWYI-IAMPSI-IIRE.

ATTAGI'IIVIENT FOR LOOMS.

Specification of Letters Patent.

Patented Mar. 16, 1920.

Application filed May 20, 1919. Serial No. 298,453.

To all 107mm it may com-em:

Be it known that I, DANIEL BLouBAoH, a citizen of Germany, and a resident of Keene, in the county of Cheshire, and State of New Hampshire, have invented certain new and useful Improvements in Attachments for Looms, of which the following is a specification. j

The present invention relates to. attachments for looms of the narrow-ware type, whereon ribbons, tapes, etc, are woven. The invention pertains more particularly to a loom attachment for working patterns or figures in the face of the fabric, while it is being woven.

The main object of the invention is to provide an attachment of the character described, which is-simple in construction, efficient in operation, and which can be mounted ona loom' of the type mentioned without necessitating, material changes in the construction of the latter.

A further object of the invention is to so construct the attachment that the fabricmaking weft serves at the" same time to entwine or bind down in therface of the fabric a plurality of patterne1- figure-threads,

that run substantially parallel to the weft.

With these and other objects in view, which will more fully appear as the nature of the invention is'bjett-er understood, the same consists in thel'combination, arrangement andconstruction of parts hereinafter described, pointed out in the appended claims and illustrated inthe accompanying drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of construction within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustrated in the accompanying drawings, in which Figure '1 is a transverse vertical section taken through a loom provided with the attachment; Fig. 2 is a plan view of the attachment on a larger scale; Fig. 3 is a sec- -'tion takenf on line 3 3 of Fig. 2; Fig. 4: is a plan View of a portion of the attachment, on a still larger scale; Fig. 5 is a view simi- 'lar. to the'one shown in Fig. 4: with the elements in" other positions; Fig. 6 is a section -taken on line 6-6 of Fig. 5; and Fig. 7 is a view, in plan, of a piece of figured fabric produced upon a loom provided with theat: tachment. I

In the drawings only as much of the loom has been shown as is necessary to understand the invention, and, While herein a particular type of a loom has been disclosed for purposes of illustration, the invention is applicable to other types just as well.

In the drawings, the numeral 10 indicates the frame of the loom, to which are pivoted at 11 lay-swords 12, carrying a batten13 of any suitable construction. This batten is actuated from the main shaft 14 of the ma chine, by forming upon the said shaft a crank, connected by a pitman 15 with the said batten, thereby causing the latter to move back and forth, in the usual manner,

to beat up the filling. The harness frames, denoted by the numerals 16 and 17, are actuated by means not shown, to raise or lower the same in forming sheds. The attachment herein described is illustrated for working patterns or figures in the face .of a plainweave fabric, and the sheds are thus controlled and opened in the usual manner according to the weave mentioned. It is tobe understood, however, that the invention is not limited to this particular weave. The loom frame is provided, with warp beams 18, from which the warps are led over suitable Warp rolls 19 to and through the usual eyes in whatever heddles are carried by the harness frames, and thence between the dents of the usual reed 20 upon the batten 13. The woven ribbons are led over a roller 21, carried by the breast beam 22, and are then taken care of by any suitable take-up mechanism, common to looms. The shuttle 23 is of the fly-shuttle type, and is actuated by means herein not shown, as the same does not form part of the present invention, it

being actuated at each pick of the loom.

The elements so far described operate in the usual manner, so that a. detailed description of the operation seems to be unnecesfabric 24, having warp threads 25 and, weft threads 26. Into the face of this fabric are worked patterns or figures 27, the threads of each pattern being? entwined or bound down spindle d0 in a by the weft of the base fabric, the patternor figure -threads running substantially parallel to the weft. The base fabric is produced by the loom in the ordinary manner, while the patternor figure-threads are presented for entwining by the attachment that forms the subject matter of the present application for Letters Patent. In Fig. 7 three pattern or figure-threads are shown, but it is obvious that any suitable number may be employed according to the requir ments. Each of these threads is wholly dis posed upon the outer face of'thefabric and produces a zigzag pattern that extends longitudinally of the ribbon. These threads may he obviously of any suitable color, they being led to the attachment from bobbins 28, that are mounted upon the loom frame. 7

The attachment comprises, generally speaking, two parts, one, denoted by the numeral 29, being mounted upon thebatten, and the other one, indicated at 80, being held upon the breast beam The element 30 comprises a dobby -chain mechanism,

including a prism 31, that 'rotatably mounted in stan dards on the loom frame and is actuated in any suitable'ma ner by a mechanism so that at every pick of the loom it is gi en a partial turn, to pres another pattern card 82 to the mechanism. 29, carried by the batten. The pattern cards carry each three pe or, in other words, as many pegs as there are pattern: or figurethreads 27 employed. The pegs are of different lengths, for a purpose that will here inafter appear.

T he mechanism 29 comprises three slides 34, which are mounted in guides35 upon the base plate 38, thelatter being disposed horizontally and fixed the front of the batten. i These slides cotiporate with the pegs they being caused to mote pcgstoward the bat and threction by springs 69. Vi

coi ed upon a. fixed $1 in the iespective l -hth each spiingco-acts a stop as,

cooperates one s;

slide.

held stationary by screws 4:3 upon the base Each slide is connected, by means plate hereinafter to be described, with a ho; tally disposedbar 4rd, that extends parallel tot-hebatten and is adapted to reciprocate longitudinally of V the batten or, in other words, transversely of the direction. of

travel of the wrap threads. Each of these bars carries a downwardly projecting needle 45, having an eye in its free end, through'which a figureo1" pattern-thread 27, leading from the bobbins 28, is threaded. These needles reach within the sheds in rear of the shuttle, when the batten is in its outermost position (that is away from the breast plate), but are disposed above the threads when the batten is in its inner position, in which it beatsup the filling atthe the standards being fixed to the base plate These pawls are kept by gravity in engagement with the teeth of the racks e9,

permitting the slides to move toward' t-he batten and holding the springs 39 under compression, as will hereinafter appear, to.

cause the slides to move in opposite direc tions when the pawls are disengaged from the racks. For disengaging the said pawls, there is pivoted to the bar 51 a frame 53, having a transversely extending member disposed below and abutting against "the said pawls. To this frame fixedly attached a rearwardly extending arm 55, that is disposed. in the path of a linger 56, the latter being fixed to a shaft 57, that is rotatably mounted. in the loom frame and is driven from the gears 58. This tram of gears is so designed that the shaft 5-? makes one turn for every two revolutions of the. main shaft.

The operation of the machine is as follows :The batten is reciprocated in the usual manner from the main shaft, the reed beating up the filling upon each forward movement of the batten and the'shed opening on each backward movement thereof.

The mechanism 29 travels with the batten. Let us suppose that the batten was just in its outermost position, the shuttle has traveled through the shed and after that the finger 56 has raised, by the intermediary of the arm 55, the frame 53. The pawl s have thus been disengaged from the slides, which, under the action of the springs 39. cooperating therewith, have moved forward, that is to say toward the breast beamof the machine. A rocking bar 59 takes up the slack of the figure-threads 27. while the bat ain shaft by a train of' reference character A upon Fig. 7 of the drawings. The pawls keep these needles in position as the batten now moves backward and the shed opens. The needles project, as above stated, into the shed, when the batten is in its rear position (Fig. 1). The shuttle moves then through the shed, the weft engaging the threads 27, which are beaten up with the filling on the next forward stroke of the batten. Inasmuch as the needles are, before reaching the forward position of the batten, disposed above the warp threads, the threads 27 are located on the outer face of Hw- When the batten, on its forward stroke, reaches its outermost position, the prism has already been given a partial turn, and longer pegs pre sented to the slides, which will thus move forward and cause the needle carrying bars at to move farther in the direction of the arrow shown in Fig. 2 of the drawings, stopping at points indicated by the refer ence character B on Fig. 7 of the drawings. The batten moves then backward, the shuttle being actuated as above described. Before the batten moves again toward the jacquard mechanism, the finger 56 lifts the arm 55, thereby disengaging the pawls from the racks on the slides, so that the latter move forward under the action of the springs associated therewith. When coming into contact with the next pattern card, short pins are in position to bring the needles into the positions indicated by the reference character C in Fig. 7 of the drawings.

peated.

From the foregoing it appears that the jacquard mechanism and the slide releasing mechanism are so timed that the slides are released by the pawls at every secondpick of the loom, and the slides, after being released, come into contact] with short pegs and at the next pick with long pegs on the pattern cards. In this manner the figure thread carrying needles are moved in a zigzag line, the positions of the sharp turns of the zigzag line being determined by the size of the pegs on the pattern cards.

It is obvious that, while herein three slides and a corresponding number of cooperating parts have been described, any other suitable number may be used according to the requirements. Attention is furthermore called to the fact that, while herein the loom has been described as producing a single ribbon only, in practice a great The cycle of operation is then re-.

said batten actuated by the pegs of the (lobby-chain mechanism, and connecting means between said slides and said needlecarriers.

2. In a loom according to claim 1, the needles on said carriers extending into the shed when said batten is in its outer position and being disposed above the fabric when said batten is in its inner position.'

3. A loom according to claim 1, including a spring associated with each slide for moving the same in a direction opposite to that 7 produced by said pegs.

4:. A loom according to claim 1, comprising a rack upon each slide having ratchet teeth, a pawl cooperating with each rack, a pivoted frame carrying said pawls, said pawls preventing a movement of said slides in a direction opposite to that induced by,

said pegs, a rotary shaft carrying a lug cooperating with said frame for raising the latter so as to disengage said pawls from said racks at times when said batten starts its movement toward said pattern cards.

5. A loom according to claim 1, eomprising a rack upon each slide having ratchet teeth, a pawl cooperating with each rack, a pivoted frame carrying said pawls, said pawls preventing a movement of said slides in a direction opposite to that induced by said pegs, arotary shaft carrying a lug cooperating with said frame for raising the latter so as to disengage said pawls from said racks upon every second pick of the loom at times when said batten starts its movement toward said pattern cards.

Signed at Keene, in the county of Cheshire and State of New Hampshire, this 15th day of May, A. D. 1919.

DANIEL BLOMBAGH. Witnesses:

EVELYN R. SEVIGNY,

JOHN J. LANDERS. 

